Smartphone data usage: downlink and uplink asymmetry
نویسندگان
چکیده
منابع مشابه
Downlink and Uplink Channel Asymmetry and Novel Handover Ranging Power Adjustment Scheme in OFDMA/TDD Systems
This paper studies the channel asymmetric characteristic between a downlink and an uplink channel in orthogonal frequency division multiple access (OFDMA)/ time division duplexing (TDD) systems. To investigate the downlink and uplink channel asymmetry, we derive a propagation loss mo-del and a shadowing model taking into consideration geometrical information and inter-cell interference. Then, t...
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Decoupling the uplink and downlink user association improves the throughput of heterogeneous networks (HetNets) and balances the traffic load of macro- and small- base stations. Recently, fiber-wireless HetNets (FiWi-HetNets) have been considered as viable solutions for access networks. To improve the accuracy of user association and resource allocation algorithms in FiWi-HetNets, the capacity ...
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In our previous work [1], [2] we considered the uplink of a hexagonal cellular network topology and showed that linear “one-shot” interference alignment (IA) schemes are able to achieve the optimal degrees of freedom (DoFs) per user, under a decoded-message passing framework that allows base-stations to exchange their own decoded messages over local backhaul links. In this work, we provide the ...
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ژورنال
عنوان ژورنال: Electronics Letters
سال: 2016
ISSN: 0013-5194,1350-911X
DOI: 10.1049/el.2015.3249